1 / 9

Chemical Equations

Chemical Equations. Parts of an equation and how to balance. Chemical Equation:. Set of directions for a chemical reaction. The directions tell us: What materials to use How much you need Amount of product you will get. Chemical Equations *. Give info about:

sebastian
Download Presentation

Chemical Equations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemical Equations Parts of an equation and how to balance

  2. Chemical Equation: Set of directions for a chemical reaction. The directions tell us: • What materials to use • How much you need • Amount of product you will get

  3. Chemical Equations * Give info about: • Reactants – substances being used in the reaction (starting materials on Left side of equation) • Products – new substances formed (ending materials on Right side of equation)

  4. Numbers in Equations * • Coefficients – small whole numbers in front of compounds ex. 2 NaCl = 2 NaCl ’s • Subscripts – small numbers following elements ex. H2O = 2 H’s , 1 O

  5. Indications of a Chemical Reaction * • Color • Gas / Bubbles • Precipitate • Temperature Change • Light Chemists Get Practice Trying Labs (Typically, more than one will be seen)

  6. Diatomic Elements * • Two elements that exist bonded together when not bonded to another elements • Remember the seven + one rule that starts at element #7 H N, O, F Cl Br I At

  7. Chemical Equation Symbols * SymbolMeaning (s) solid (l) liquid (g) gas (aq) aqueous dissolved in water

  8. Chemical Equation Symbols * (Cont.) SymbolMeaning yields equilibrium heated temp at which reaction is run 3500

  9. Balancing Equations • Check for diatomics • Balance metals • Balance nonmetals • Balance Oxygen • Balance Hydrogen • Recount all atoms • If every coefficient will reduce, write in simplest whole number ratio

More Related